Electronics Forum | Tue Oct 15 13:40:23 EDT 2002 | greenman
I'm currently trying to get a feel for what oxygen level I will need in my lead-free assembly process. Do I need to go with the pure vaporized liquid nitrogen, or can I get away with one of the other "on-demand" operations? All assistance gratefully
Electronics Forum | Mon Oct 21 13:12:38 EDT 2002 | pr
Try a "cross" design across the problem apertures. So you wind up with 4 smaller deposits on the PCB (instead of 1 big one) but should be enough to hold the component. It worked for us and was much easier on the blades (they kept catching on the far
Electronics Forum | Tue Oct 22 14:25:11 EDT 2002 | slthomas
Yeah, but can they place through-hole? We looked at Panasert's Radial a couple years ago. Some big advantages over the Radial Lead 5's that we had at the time, but couldn't deal efficiently with all of our electrolytic cap orientations. We wanted to
Electronics Forum | Thu Oct 24 12:09:31 EDT 2002 | slthomas
Have you looked at cross-sectional analysis? If they can provide you details of where the failures are occurring, maybe you can chop one up and see exactly what's going on? We've done it once for our own engineering department and the results (not
Electronics Forum | Thu Oct 24 17:32:54 EDT 2002 | ksfacinelli
The big problem we saw was the appearance of the solder joint after the water wash process. We saw the joints turn white through the absorption of moisture. Looked real bad but still functioned. I would stick with using only one of the processes a
Electronics Forum | Fri Oct 25 16:40:06 EDT 2002 | davef
Nor ment as a criticism of anyone, but you really need to become intimate with your stencil supplier. This is not one of those "throw it over the wall" buying relationships, like you can have with buying pencils. View this an opportunity to develop
Electronics Forum | Tue Oct 29 11:01:56 EST 2002 | yngwie
Ok..I will refer to the past thread myself....but, just an update, after getting the BGA rebaked ( as I didn't see an evidence from Production saying that they hv baked these batch of BGAs). The shorts are all gone. But one thing thou', if the proble
Electronics Forum | Wed Nov 06 12:52:28 EST 2002 | charlie
Check out one of the board suppport that are currently available: Grid-Lok, Formflex and others. These systems are available for many models of printers and P&P. They automatically set up to any board, first or second side, and provide excellent su
Electronics Forum | Wed Nov 06 11:12:33 EST 2002 | blnorman
I agree whole heartedly. Unfortunately in the different industries I've worked (garment, appliance, aerospace, and now electronics) this is a common issue. These procedures are in place for product reliability as well as safety. I trained at the
Electronics Forum | Thu Nov 07 12:07:46 EST 2002 | slthomas
This is more of a two-dimensional phenomenon than the linear features (wrinkles) that I would associate with disturbed solder. What I should do is contact my own solder supplier on this, I guess, but it hasn't been particularly high on my priority l
